;(function ($, window, document, undefined) {

'use strict';

Tennpipes.libs.slider = {
  name : 'slider',

  version : '5.5.1',

  settings : {
    start : 0,
    end : 100,
    step : 1,
    precision : null,
    initial : null,
    display_selector : '',
    vertical : false,
    trigger_input_change : false,
    on_change : function () {}
  },

  cache : {},

  init : function (scope, method, options) {
    Tennpipes.inherit(this, 'throttle');
    this.bindings(method, options);
    this.reflow();
  },

  events : function () {
    var self = this;

    $(this.scope)
      .off('.slider')
      .on('mousedown.fndtn.slider touchstart.fndtn.slider pointerdown.fndtn.slider',
      '[' + self.attr_name() + ']:not(.disabled, [disabled]) .range-slider-handle', function (e) {
        if (!self.cache.active) {
          e.preventDefault();
          self.set_active_slider($(e.target));
        }
      })
      .on('mousemove.fndtn.slider touchmove.fndtn.slider pointermove.fndtn.slider', function (e) {
        if (!!self.cache.active) {
          e.preventDefault();
          if ($.data(self.cache.active[0], 'settings').vertical) {
            var scroll_offset = 0;
            if (!e.pageY) {
              scroll_offset = window.scrollY;
            }
            self.calculate_position(self.cache.active, self.get_cursor_position(e, 'y') + scroll_offset);
          } else {
            self.calculate_position(self.cache.active, self.get_cursor_position(e, 'x'));
          }
        }
      })
      .on('mouseup.fndtn.slider touchend.fndtn.slider pointerup.fndtn.slider', function (e) {
        self.remove_active_slider();
      })
      .on('change.fndtn.slider', function (e) {
        self.settings.on_change();
      });

    self.S(window)
      .on('resize.fndtn.slider', self.throttle(function (e) {
        self.reflow();
      }, 300));
  },

  get_cursor_position : function (e, xy) {
    var pageXY = 'page' + xy.toUpperCase(),
        clientXY = 'client' + xy.toUpperCase(),
        position;

    if (typeof e[pageXY] !== 'undefined') {
      position = e[pageXY];
    } else if (typeof e.originalEvent[clientXY] !== 'undefined') {
      position = e.originalEvent[clientXY];
    } else if (e.originalEvent.touches && e.originalEvent.touches[0] && typeof e.originalEvent.touches[0][clientXY] !== 'undefined') {
      position = e.originalEvent.touches[0][clientXY];
    } else if (e.currentPoint && typeof e.currentPoint[xy] !== 'undefined') {
      position = e.currentPoint[xy];
    }

    return position;
  },

  set_active_slider : function ($handle) {
    this.cache.active = $handle;
  },

  remove_active_slider : function () {
    this.cache.active = null;
  },

  calculate_position : function ($handle, cursor_x) {
    var self = this,
        settings = $.data($handle[0], 'settings'),
        handle_l = $.data($handle[0], 'handle_l'),
        handle_o = $.data($handle[0], 'handle_o'),
        bar_l = $.data($handle[0], 'bar_l'),
        bar_o = $.data($handle[0], 'bar_o');

    requestAnimationFrame(function () {
      var pct;

      if (Tennpipes.rtl && !settings.vertical) {
        pct = self.limit_to(((bar_o + bar_l - cursor_x) / bar_l), 0, 1);
      } else {
        pct = self.limit_to(((cursor_x - bar_o) / bar_l), 0, 1);
      }

      pct = settings.vertical ? 1 - pct : pct;

      var norm = self.normalized_value(pct, settings.start, settings.end, settings.step, settings.precision);

      self.set_ui($handle, norm);
    });
  },

  set_ui : function ($handle, value) {
    var settings = $.data($handle[0], 'settings'),
        handle_l = $.data($handle[0], 'handle_l'),
        bar_l = $.data($handle[0], 'bar_l'),
        norm_pct = this.normalized_percentage(value, settings.start, settings.end),
        handle_offset = norm_pct * (bar_l - handle_l) - 1,
        progress_bar_length = norm_pct * 100,
        $handle_parent = $handle.parent(),
        $hidden_inputs = $handle.parent().children('input[type=hidden]');

    if (Tennpipes.rtl && !settings.vertical) {
      handle_offset = -handle_offset;
    }

    handle_offset = settings.vertical ? -handle_offset + bar_l - handle_l + 1 : handle_offset;
    this.set_translate($handle, handle_offset, settings.vertical);

    if (settings.vertical) {
      $handle.siblings('.range-slider-active-segment').css('height', progress_bar_length + '%');
    } else {
      $handle.siblings('.range-slider-active-segment').css('width', progress_bar_length + '%');
    }

    $handle_parent.attr(this.attr_name(), value).trigger('change').trigger('change.fndtn.slider');

    $hidden_inputs.val(value);
    if (settings.trigger_input_change) {
        $hidden_inputs.trigger('change');
    }

    if (!$handle[0].hasAttribute('aria-valuemin')) {
      $handle.attr({
        'aria-valuemin' : settings.start,
        'aria-valuemax' : settings.end
      });
    }
    $handle.attr('aria-valuenow', value);

    if (settings.display_selector != '') {
      $(settings.display_selector).each(function () {
        if (this.hasOwnProperty('value')) {
          $(this).val(value);
        } else {
          $(this).text(value);
        }
      });
    }

  },

  normalized_percentage : function (val, start, end) {
    return Math.min(1, (val - start) / (end - start));
  },

  normalized_value : function (val, start, end, step, precision) {
    var range = end - start,
        point = val * range,
        mod = (point - (point % step)) / step,
        rem = point % step,
        round = ( rem >= step * 0.5 ? step : 0);
    return ((mod * step + round) + start).toFixed(precision);
  },

  set_translate : function (ele, offset, vertical) {
    if (vertical) {
      $(ele)
        .css('-webkit-transform', 'translateY(' + offset + 'px)')
        .css('-moz-transform', 'translateY(' + offset + 'px)')
        .css('-ms-transform', 'translateY(' + offset + 'px)')
        .css('-o-transform', 'translateY(' + offset + 'px)')
        .css('transform', 'translateY(' + offset + 'px)');
    } else {
      $(ele)
        .css('-webkit-transform', 'translateX(' + offset + 'px)')
        .css('-moz-transform', 'translateX(' + offset + 'px)')
        .css('-ms-transform', 'translateX(' + offset + 'px)')
        .css('-o-transform', 'translateX(' + offset + 'px)')
        .css('transform', 'translateX(' + offset + 'px)');
    }
  },

  limit_to : function (val, min, max) {
    return Math.min(Math.max(val, min), max);
  },

  initialize_settings : function (handle) {
    var settings = $.extend({}, this.settings, this.data_options($(handle).parent())),
        decimal_places_match_result;

    if (settings.precision === null) {
      decimal_places_match_result = ('' + settings.step).match(/\.([\d]*)/);
      settings.precision = decimal_places_match_result && decimal_places_match_result[1] ? decimal_places_match_result[1].length : 0;
    }

    if (settings.vertical) {
      $.data(handle, 'bar_o', $(handle).parent().offset().top);
      $.data(handle, 'bar_l', $(handle).parent().outerHeight());
      $.data(handle, 'handle_o', $(handle).offset().top);
      $.data(handle, 'handle_l', $(handle).outerHeight());
    } else {
      $.data(handle, 'bar_o', $(handle).parent().offset().left);
      $.data(handle, 'bar_l', $(handle).parent().outerWidth());
      $.data(handle, 'handle_o', $(handle).offset().left);
      $.data(handle, 'handle_l', $(handle).outerWidth());
    }

    $.data(handle, 'bar', $(handle).parent());
    $.data(handle, 'settings', settings);
  },

  set_initial_position : function ($ele) {
    var settings = $.data($ele.children('.range-slider-handle')[0], 'settings'),
        initial = ((typeof settings.initial == 'number' && !isNaN(settings.initial)) ? settings.initial : Math.floor((settings.end - settings.start) * 0.5 / settings.step) * settings.step + settings.start),
        $handle = $ele.children('.range-slider-handle');
    this.set_ui($handle, initial);
  },

  set_value : function (value) {
    var self = this;
    $('[' + self.attr_name() + ']', this.scope).each(function () {
      $(this).attr(self.attr_name(), value);
    });
    if (!!$(this.scope).attr(self.attr_name())) {
      $(this.scope).attr(self.attr_name(), value);
    }
    self.reflow();
  },

  reflow : function () {
    var self = this;
    self.S('[' + this.attr_name() + ']').each(function () {
      var handle = $(this).children('.range-slider-handle')[0],
          val = $(this).attr(self.attr_name());
      self.initialize_settings(handle);

      if (val) {
        self.set_ui($(handle), parseFloat(val));
      } else {
        self.set_initial_position($(this));
      }
    });
  }
};

}(jQuery, window, window.document));